Selective punching machine



Jap. 4, 1927. 1,612,971

, w. s. FREEBURG SELECTIVE PUNCHING MACHINE Filed August 19/1921 3Sheets-Sheet l Jan. 4, 1927. i 1,612,971

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w. s. FREEBURG SELECTIVE PUNCHING MACHINE FiledAugu st 19, 1921 WALTER5. FREEELEE 1 NT E E?! W A'TTD'RNE'Y Patented Jan. 4, 1927.

units srrss PATEN'E series.

WALTER S. FREEBUBG, CF MILW'AUKEE, "WISCONSIN, ASSZGIEGFJ, BY I/EESNEASSIGN- MEN'IS, TO THE FISK RUBBER COMPANY, OE CHZCOFEE FALLS,IX'IASSACHUSETTS,

A CORPORATION OF MASSACHUSETTS.

SELECTIVE PUNCI-IING MACHINE.

Application filed August 19, 1921.

My invention relates to selective punching machines and the principalobject of my invention is to provide a new and improved automaticmachine. In the drawings accompanying this specification and forming apart thereof I have shown, for purposes of illustration, one form whichmy inven tion may assume. In these drawings- Figure 1 represents adiagrammatic view of this illustrative embodiment of my invention,

Fig. 2 represents a front elevation of this illustrative embodiment,

Fig. 3 represent-s an end view of the machine shown in Fig. 2,

Fig. 4 represents a section of the form or cylinder,

Fig. 5 represents ageneral view of one of the tools, while 29 Fig.6represents a mat punched on the.

Slidably mounted in the frame 11 are two cross heads 15 rotatablysupporting a cross rod 16 to which is secured a form 17 in the shape ofa hollow cylinder secured to the cross rods 16 by means of spokes 18.This form 17 is provided with a plurality of grooves 19 each adapted toreceive a plurality of cutting dies 20 each of which is hollow to permitthe cut out material to 'ravel into the die and is provided with ajrollow stem 21 arranged to fit within the groove 19 and adapted toregister with a cooperating aperture 22 in the form 17 and therebypermit the cut out material to pass on into the inside of the form 17This material will constantly remain in the lowest part of the form 17and accordingly upon rotation of the form the screw 23 will 50 move thematerial toward the open end of the form and in this way constantlyexpel the material from the form. It will be understood that the dies 20are readily re- Serial No. 493,730.

moved from the groove 19 and that the various dies may carry variousshapes so that the rows of dies may represent any desired row of apattern. I

The form 17 and the dies carried thereby are reciprocated by a suitableoperating means which is herein shown as a pair of connecting rods 24each secured to one of.

the crosshe'ads 15 and each carrying at its lower end an eccentric strap25 cooperating with an eccentric 26 carried by an operating shaft 27mounted to'the crosspiece 28 of the frame 11 and adapted to be connectedby a one-revolution clutch 47 to a gear 46 rotating freely upon theshaft 27 and meshing with a cooperating pinion 48 carried by themain-shaft 35.

Rotation of the form 17 is accomplished by means of a worm 29 actingupon the worm-wheel 30 secured to the cross rod 16 and carried by theextensible shaft 31 which is mounted in suitable brackets 32 and carriesat its lower end a bevel gear 33 meshing with a cooperating bevel gear34 mounted loosely on the main-shaft 35 and connected thereto at will bymeans of a magnetic clutch 36. Form 17 is caught and held in exactregister by means of a pin 37 spring pressed into locking engagementwith apertures 38 in the drum 17 and retractable by means of a solenoid39.

The solenoid 39, one revolution clutch 47, and the magnetic clutches 36and 45, are all controlled by a control 49. This control comprises fourfingers 50, 51, 52, and 53 connected by wires 54, 55, 56, and 57 to theclutch 36, the clutch 45, the clutch 47, and the solenoid 39respectively. Mounted below these fingers is a metallic plate 58 adaptedto be engaged by the fingers and connected through the wire 60 to asource of power 59 and thence through a wire 61 to the remainingterminal of each of the four con trolling devices. These fingers 50, 51,52, and 53 are normally separated from the plate 58 by means of a tape62 passing there-between, provided with apertures 63 to permit thefingers to selectively contact with the plate 58, and fed by means of aroller 64 which in turn is driven by a shaft 65 connected to a worm gear66 which meshes with a worm 67 mounted on a shaft 68 which carries abevel gear 69 meshing with a bevel gear 70 fixed to the main shaft 35.

In operation the pattern to be punched will be analyzed and the numberof different rows of characters determined. These rows will be set up inthe grooves 19 and a control tape 62 will then be prepared for thatpattern. The stock will then be started into the machine andsimultaneously the control tape will be started under the fingers 50,51, 52, and 53. As the main-shalt 35 revolves it will feed the controltape forward and various apertures 63 will come under fingers 50, 51,52, and 53 to permit these fingers to selectively contact with the plate58 and to thereby selectively energize the tour controllingdevices 36,47, and 39. Ordinarily the clutch 45 will first be energized to feed thestool: into the machine the 'l distance, whereupon this clutch Wlll bedeenergized to stop the forward movement of the stock. Simultaneouslythe solenoid 39 will have been energized to permit rotation of the form17 and the clutch 36 to cause such rotation and near the end of thedesired rotation the solenoid 39 will have been de energized so that thepin 3'? will snap into an aperture 38 when the form has assumed theproper position irrespective of whether the clutch 36 is disengaging atexactly the right instant or a trifle later. With the stock and formboth in position the one-revolution clutch 4;? will be energized tocause reciprocation of the form 17 and consequent punching of the stock.After this reeiprocation the stock will again. be fed forward, the form17 rotated it desired and the next punching elfected. lfhis process willbe repeated until the entire pattern has been punched whereupon the sametape may be re-fed and the same pattern re-punched or a new tape may beinserted and a difi'erent pattern punched.

The disclosure herein is illustrative only and subject to manyvariations both in structure and operation and also in use and myinvention is, of course, not limited to the illustrative descriptionherein contained.

I claim:

1. A device of the character described comprising a cylindrical formprovided with circumi'erent-ially spaced design cutting tools, means forrotating the form to selectively present the tools in cutting positionmeans for periodically reciprocating the form to operate the tools,means to periodically advance a sheet of, material beneath the form andmeans to automatically control the extent of rotation of the term, theperiodicity of the reciprocation ot the form and the periodicity of theadvance ot the material to punch a predetermined composite design in thesheet of material.

2. A device of the character described comprising a cylindrical formprovided with circumterentially spaced design cutting tools,electrically controlled, means for rotating the form to selectivelypresent the tools in cutting position electrically controlled means forperiodically reciprocating the term to operate the tools, electricallycontrolled means to operate the tools, electrically controlled means toperiodically advance a sheet of material beneath the form, a group ofelectrical contacts to individually operate each or the electricallycontrolled means and means to make and break the individualcontacts in apredeterminedv sequence.

In testimony whereof I have signed my name to the above specification.

WALTER S. FREEBURG.

